Elastic-fluid turbine



Dec. 21', 1926. 1,611,468

F. LGSEL ELASTIC FLUID TURBINE Filed August 6, 1924 v Bv ATTORNEYS Patented Dec. 21, 1&25.

UNITED STATES PATENT OFFiCE;

nnAi Iz reset, or BRUNN, ezecsosmmma.

ELASTItl-FLUID remains.

Application filed August 2'6, 1924, Serial 1%. 734,357, at 111 Austria December 4, 1923.

This invention relatesto elastic fluid turbines 1n WhlCh carrier bodies are provlded for the guide blades o'rdiscs and particu larlyturbines having auxiliary or additional admission intakes at the intermediate stages; The object of the invention generally is a turbine construction of this character wherein the auxiliary intake or intakes areinc'orpora't-ed into the turbine structure in man nor to avoid, thepnecessity of, additional tightening and sealing devices, espeeially between the carrier bodies. further object is a turbine structure of this character which is of simple construction ,and maybe economically produced. To these ends I have devised a turbine in Whichthe auxiliaryintakes at the intermediate stages ottheturbine are incorporated into and through the bodies carrying'the'station'ary guide discs. For a better understanding of the invention, reference may be had to the accompanying drawings, in which: Fig. 1 is a longitudi' al sectionof a turbine embodying the invent-ion; and

Fig. .2 is a transverse section on the line 1-1 of Fig. 1. .7 Referring to this drawing, I have indicated a turbine consisting of a surrounding or outer casing 12 which carriesrthe stationmy guide nozzle carriers h, only one being illustrated for convenience in illustration. The carrier body It is of suitable form and is fastened in the casing b in any convenient manner, but preferably by having its ,pe-'

riphery or its outer portion formed intoa ring at which fits into a groove formed on the interioroi the casing b. The ring 03 is observed to be slightly narrower than the width of the groove and a pair of rings 9 may be inserted around the sides thereoftor tightening and retaining the carrienh With its ring 03 within'the groove. The ringd s also provided on its periphery with a pair, of ll-shaped grooves f adjacent the opposite edges thereof, and in these grooves are placed a pair of rings f'ii'or assisting the rings g in holding the carrier '72, firmly and tightly in position. The casing b ,and'the carrier h are provided with registering ray dial canals a and c for the admission of elastic fluid especially steam and thes'eycanals lead into a curved canal 6, also formed, in the carrier h, the latter leading into 'ajstationary guide nozzle 71: formed inthesame member in which the ,main stationary guide nozzle is is "formed. The arrow .miindicates the usualijna-i'iner indicated.v 'Havingthus describedmy, ll'lVe'hiliOIl; Whflt I claim and desire to protect by Letters ,Pat-

the direction of flow ot theworking steam from the admission or higher pressure stages, and; the arrow 11 indicates the flow of auxiliary steam through the canalsa, a, 0,. and The separate and 7 distinct streams of elastic fluid, as steam, flow, through the ad'jacentstationary nozzles 72 and in butjoin,togetherv in the rotating bucket L; from whence,they .flowv together throughout the remainder of the y turbine. The bucket L .is made large enough to re oe'ijve .St'eam' froin'both canals hand k ,,v ,The two stream in pfassing out from the station aryiguide. nozzles k and Zr? haveg-to some ex; tent an ejectoraction uponeach, other and the normal flow and expansion of the steam remains unimpaired by eddies, turbulences, etc. ,The canal e, ,0 maybe of any, convenientforrn. The no'zzlecanals 7c, 10 are pref erably formed in uniformindividual guide blade members which are assembled circumfe rentifallyabout'the turbine between the carriler bodyh and the, guide discs p one after another on their,circumferences. The nozzles 70, 70 are separated by the blade dii i giparto-i, I V

, A particular advantage of this construction; is that no special tightening or sealing devices-tor the auxiliary'intakes a, 0, e is necessary-,-the tightening means} and 9 serving the double purpose of sealing and retaining the carrier body it into thecasing b and sealing against the escape of steam from the auxiliary steam intake a, c, 6. Moreover the auxiliary steam in passing through the carrier body encounters surfaces which have already been heated to a certain tween the stationary guide nozzle member 7c,k andf the" carrier body 7;, as for example V out. a r r. 1.1T- ..Anelsstifii fi dwturbine compri ing i .a

casing having. an annular grooveatthe interior thereof, a plurality. qfisets of guide means, nd-a car ie body. for sa isetsipf guide means and havingj moutwa dly projiecting; annu ar pQrt Onl fit d, in q; S id groove, said casing and said carrier body l ing provided with an auxiliary intake passage extending substantially continuously through said casing and the annular portion to the interior of said carrier body to supply fluid directly to an intermediate set of guide 111921113.

2. An elastic fluid turbine comprising a casing, a separate carrier body having its outer surface spaced from the inner surface of the casing to admit fluid therebetween having an annular portion fitted substantially fluid tight in said casing, and an annular row of stationary guide means, said casing and said carrier being provided with at least one auxiliary intake passage extending through said casing and said annular portion of the carrier to the interior ofthe carrier and guiding the elastic fluid directly to said set of stationary guide means. 7

An elastic fluid turbine comprising a casing, a separate carrier body fixed to the casing and having a connecting portion fitted fluid tight with the interior of said casin and a plurality of annular sets of guide nozzles fixed to said carrier body at the interior thereof, all of said guide nozzles having main guide canals and the guide nozzles of one of said sets having auxiliary guide canals adjacent the main guide canals, said casing and carrier having an auxiliary intake passage uiding elastic fluid through the casing, saic connecting portion and said carrier body direct to said auxiliary guide canals.

4:. An elastic fluid turbine comprising a casing having an annular groove at the interior thereof, a plurality of sets of guide means for diflerent stages of the turbine, a carrier body for said sets of guide means and having an outwardly projecting annular portion extending into said groove, and sealing means in said sides of said annular portion, said casing and said carrier body being provided with an auxiliary intake passage extending sul stantially continuously through said casing and the said annular portion to the interior of said carrier body and supplying fluid to one of said sets of guide means in an intermediate stage of the turbine.

5. An elastic fluid turbine comprising a casing; a separate carrier body spaced from said turbine casing to admit fluid therebetween and having an outwardly projecting annular portion fixed to the interior of the casing and stationary guide nozzles carried by said carrier bod having main guide canals and including an annular set of said guide nozzles, in an intermediate stage of the turbine, having auxiliary guide canals adjacent the main guide canals, said casing and said carrier body being provided with an auxiliary intake leading fluid through the casing, 'said annular portion and said auxiliaryican'a lsp i, V .(v

groove on opposite- 6. An elastic fluid turbine comprising an outer casing; diaphragms; stationary noz zles arranged in annular sets, one on each diaphragm, and including a set at an intermediate stage of the turbine in which each nozzle is provided with a main and an auxiliary canal; a separate carrier body spaced inwardly from said casing to admit steam therebetween and carrying said stationary nozzles and said diaphragms, and connections between the outer casing and the carrier body, provision being made of an auxiliary elastic fluid intake passage extending through the outer casing, a portion of said connections and the carrier body and guiding fluid to said auxiliary nozzle canals.

7. An elastic fluid turbine comprising an outer casing having an auxiliary fluid intake, and a separate rotor enclosing carrier body spaced from said casing to admit fluid there between having an elastic fluid canal associated with said auxiliary fluid intake, and diaphragms and corresponding sets of guide nozzles carried by and enclosed by said carrier body, said carrier body and the outer casing having abutting surfaces and the canal extending from the outer casing and through said abutting surfaces directly through the carrier body to one of said sets of guide nozzles at an intermediate stage of the turbine.

8. An elastic fluid turbine comprising an outer casing, a separate rotor enclosing carrier body therein carried thereby and spaced therefrom, diaphragms and corresponding sets of guide nozzles carried by the carrier and including guide nozzles in an intermediate stage provided with auxiliary nozzle canals, and connecting and sealing means between the outer casing and the carrier body, provision being made of an auxiliary intake passage extending through said outer casing and said carrier body and leading directly from the outer casing through the connecting means and between the sealing means into and through the carrier body to enter said auxiliary nozzle canals provided in the guide nozzles at said intermediate stage.

9. Anelastic turbine comprising an outer casing having an auxiliary elastic fluid in take and a ring groove formed at the interior of said casing, a separate rotor enclosing carrier body spaced from said casing to admit fluid therebetween and having an annular projection entering said groove and forming abutting surfaces therewith and an nular sets of nozzles including an intermediate set of which the nozzles have auxiliary guide canals, provision being made of an auxiliary intake extending through said outer casing and through said ring groove aswell as through said annular projection and carrier body and leading to said auxiliaryl nozzle canals.

10. An elastic fluid turbine comprising an outer casing having a main elastic fluid intake and an additional elastic fluid intake leading to an intermediate stage, and a separate carrier spaced inwardly from said outer casing and mounted therein by means of a groove and an annniar projection fitted in said groove and carrying the guide means of said intermediate stage, said additional intake extending-through said casing and carrier body and through such annular projec tion.

In testimony whereof, I have signed my name to this specification;

FRANZ LOSEL. 

